postgres

History

Tom Lane 4907ba304c Doc: simplify the tutorial's window-function examples. For the purposes of this discussion, row_number() is just as good as rank(), and its behavior is easier to understand and describe. So let's switch the examples to using row_number(). Along the way to checking the results given in the tutorial, I found it helpful to extract the empsalary table we use in the regression tests, which is evidently the same data that was used to make these results. So I shoved that into advanced.source to improve the coverage of that file a little. (There's still several pages of the tutorial that are not included in it, but at least now 3.5 Window Functions is covered.) Suggested-by: "David G. Johnston" <david.g.johnston@gmail.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/173737973383.1070.1832752929070067441@wrigleys.postgresql.org		11 months ago
..
.gitignore	Add .gitignore to src/tutorial/	6 years ago
Makefile	…
README	…
advanced.source	Doc: simplify the tutorial's window-function examples.	11 months ago
basics.source	Doc: sync src/tutorial/basics.source with SGML documentation.	3 years ago
complex.c	Deduplicate "invalid input syntax" messages for various types.	8 years ago
complex.source	Update copyright for 2025	12 months ago
funcs.c	Add documentation about calling version-1 C functions from C.	11 months ago
funcs.source	Add documentation about calling version-1 C functions from C.	11 months ago
syscat.source	Update copyright for 2025	12 months ago

README

src/tutorial/README

tutorial
========

This directory contains SQL tutorial scripts.  To look at them, first do a
	% make
to compile all the scripts and C files for the user-defined functions
and types.  (make needs to be GNU make --- it may be named something
different on your system, often 'gmake')

Then, run psql with the -s (single-step) flag:
	% psql -s

From within psql, you can try each individual script file by using
psql's \i <filename> command.